runtime: improve arm64 memmove #22925
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bradfitz
changed the title
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The intent of this bug report is to convey the fact that my team and I are developing an improved version of the memmove routine for arm64. This is based on results from https://blog.cloudflare.com/arm-takes-wing/ |
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The tree opens for performance work in early February. Please have code review(s) w/ benchstat performance numbers in the commits ready by then. The tree will close for performance work in early May. |
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Will do. Thanks, Brad. |
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Change https://golang.org/cl/83799 mentions this issue: |
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Change https://golang.org/cl/83175 mentions this issue: |
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Please answer these questions before submitting your issue. Thanks!
What version of Go are you using (
go version)?go version go1.9.2 linux/arm64
Does this issue reproduce with the latest release?
yes
What operating system and processor architecture are you using (
go env)?What did you do?
Identified via inspection.
What did you expect to see?
The implementation can be improved by unrolling loops and using sets of ldp and stp instructions.
What did you see instead?
The text was updated successfully, but these errors were encountered: